One recent morning near the mouth of a canyon in southwest Colorado Springs, Christine Siddoway placed a few peculiar rocks ...

Geologists studying ancient environments have found preserved evidence of salt diapir structures in the rock record. These ...

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, ...

Roughly 4.5 billion years ago, the young solar system was a swirling cloud of gas and dust that formed the first asteroids ...

Wyoming’s “dinosaur mummies,” once thought to preserve fossilized flesh, are actually detailed clay molds formed by microbes ...

New dating has revealed that New Mexico's last dinosaurs were healthy, diverse and thriving at the end of the Cretaceous ...

A new study sheds light on how these reptiles become “mummies” and paints a picture of what these ancient animals looked like ...

In a first, researchers have discovered fragments of Earth's precursor that contain distinctive chemical fingerprints in ...